1220512254544 has 40 divisors (see below), whose sum is σ = 2579978433312. Its totient is φ = 554722523520.

The previous prime is 1220512254529. The next prime is 1220512254571. The reversal of 1220512254544 is 4454522150221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1432827 + ... + 2119909.

Almost surely, 2^{1220512254544} is an apocalyptic number.

It is an amenable number.

1220512254544 is an abundant number, since it is smaller than the sum of its proper divisors (1359466178768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220512254544 is a wasteful number, since it uses less digits than its factorization.

1220512254544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697195 (or 697189 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 37.

The spelling of 1220512254544 in words is "one trillion, two hundred twenty billion, five hundred twelve million, two hundred fifty-four thousand, five hundred forty-four".